<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .username{

            background-image: url("img.username.svg");

        }
        .password{

            background-image: url("img.password.svg");

        }
        input{
            background-repeat: no-repeat;
            background-size: 15px;
            background-position: 5px center;
            padding-left: 25px;
        }
    </style>
</head>
<body>
<div>
    <table>
        <tr>
            <td>登录名：</td>
            <td><input class="username" placeholder="username"/></td>
        </tr>

        <tr>
            <td>密码：</td>
            <td><input class="password" placeholder="password" type="password"></td>
        </tr>

        <tr>
            <td>登录为：</td>
            <td>
                <select>
                    <option>---选择角色---</option>
                    <option>学生</option>
                    <option>老师</option>
                </select>
            </td>
        </tr>

        <tr>
            <td></td>
            <td>
                <button type="submit">登录</button>
                <button type="reset">重置</button>
            </td>
        </tr>

    </table>
</div>

</body>
</html>